1. Electrical Conduction In CuO-B2O3 Glasses
W. J. Gawande, S. S. Yawale S. P. Yawale
ABSTRACT
Due to the technological importance of CuO-B2O3 glasses, dc-conductivity measurement
with increasing concentration of CuO (in the range of 10-35 mol%) have been reported in the
temperature range of 313-573 K in the present study. A plot of –log  versus 1/T shows two
different regions of conduction suggesting two types of conduction mechanisms switching
from one type to another occurring at knee temperature. The DC conductivity increases with
increase in temperature of the sample and also with increase of mol% of CuO. Activation
energy calculated from both regions (LTR and HTR) is below 1 eV. Thus electrical
conduction is electronic. Activation energy in LTR and HTR are temperature independent but
composition dependent. The values of dielectric constant at different temperature (313-573K)
at a constant frequency of 1 KHz are reported. It is observed that the dielectric constant is
independent of temperature upto certain temperature range, but after that the dielectric
constant increases with temperature rapidly. The dielectric constant of all the samples studied
is found to be composition dependent. In the glasses studied dipole relaxation phenomenon is
observed.
Keywords : CuO-B2O3 glasses, DC-conductivity, dielectric constant.
2. Structural properties of Spray pyrolytically deposited
CdxZn1-xS thin films
Y D Tembhurkar, A R Khobragade N.G.Tanelwar
ABSTRACT
Spray pyrolysis is a simple and inexpensive method for depositing thin films on large
area. Thickness of the films was calculated by weighing method. The temperature was
maintained at 3500C and was measured by pre-calibrated thermo-couple. Structural constant a0
and c0 are calculated from X-ray Debey-Scherrer method. Hexagonal structure of CdxZn1-xS thin
films has been confirmed by X-ray study. Lattice constant a0 varies from 3.8 to 4.1 A0 and c0
varies from 6.2 to 6.65 A0 as x parameter varies from 0.1 to 0.9. These variations follow Vegards
law.
Keywords: Spray pyrolysis, Thin films, Lattice constant
3. Effect Of Sr-Doping On The Mechanoluminescence Of γ
Irradiated NaCl and KCl Crystals
Anubha Singh Gour, B.P.Chandra
ABSTRACT
Mechanoluminescence is a type of luminescence induced during any mechanical action on
solids. It can be excited by grinding, rubbing, cutting cleaving, and shaking scratching
compressing or by crushing of solids. ML can also be excited by thermal schokes caused by
drastic cooling or heating of materials or by the shock-wave production during the deformation
caused by the phase transition or growth of certain crystals is as well as material in contact
During the impulsive excitation of ML in γ-irradiated Sr-doped NaCl and KClcrystals,two peaks
occur in the ML intensity versus time curve. The ML intensity of the second peak .i.e. Im2 is
always less then the first peak. The value of Im1 and Im2 and the total ML intensity It. During
the impulsive excitation of ML, it is seen that both tm1 and tm2 decrease with increasing strain
rate of the crystals and IT initially increase with increasing strain rate and then it attains a
saturation value for higher values of the strain rate.
Keywords: Mechanoluminescence, Colourcentre in Alkalihalide Crystals
4. Polyaniline. Preparation of a conducting polymer
S. S. Hole, M. D. Vidhale, D.S. Dhote
ABSTRACT
. In a “standard” procedure,aniline hydrochloride was oxidized with ammonium peroxydisulfate
inaqueous medium at ambient temperature. The yield of polyaniline was higher than 90 % in all
cases. The electrical conductivity of polyaniline hydrochloride thus prepared was 4.4 ± 1.7 S
cm–1 (average of 59 samples), measured at room temperature. A product with defined electrical
properties could be obtained in various laboratories by following the same synthetic procedure.
The influence of reduced reaction temperature and increased acidity of the polymerization
medium on polyaniline conductivity were also addressed. The conductivity changes occurring
during the storage of polyaniline were monitored. The density of polyaniline hydrochloride was
1.329 g cm–3. The average conductivity of corresponding polyaniline bases was 1.4 × 10–8 S
cm–1, the density being 1.245 g cm–3. Additional changes in the conductivity take place during
storage. Aging is more pronounced in powders than in compressed samples. As far as aging
effects are concerned, their assessment is relative. The observed reduction in the conductivity by
~10 % after more than one-year storage is large but, compared with the low conductivity of
corresponding polyaniline (PANI) base, such a change is negligible. For most applications, an
acceptable level of conductivity may be maintained throughout the expected lifetime
5. Study of optical properties of Cadmium Oxide using UV-VIS
spectroscopy
S. S. Kosalge, S. A. Waghuley, P.G.Bhatia, F. C. Raghuwanshi, B. H. Pawar
ABSTRACT
Metal oxides have been extensively explored for several advanced applications, such as in
electronics, optics, and heterogeneous catalysis and sensors. Cadmium oxide was prepared by
chemical co-precipitation technique. The optical transmission spectra of chemically synthesized
and commercially procured samples were recorded by using UV-VIS spectroscopy. The
transmission coefficient (α), optical energy gap (E) were estimated and compared.
Keywords: Cadmium oxide, optical properties, chemical co-precipitation
6. Thermal behaviour and Thermokinetic studies of Thiazole
Schiff Base Complexes Cr(III),Mn(III),Fe(III),VO(IV),Zr(IV)
and UO2(VI)
S. R. Kelode, P. R. Mandlik
ABSTRACT
The thiazole Schiff base have been synthesized by condensing 2-hydroxy-5-chloro acetophenone
and 4-(p-hydroxyphenyl)-2-aminothiazole. The metal complexes were obtained as a result of
interaction of Schiff base ligand and metal ions Cr (III), Mn(III), Fe (III), VO (IV), Zr (IV) and
UO2 (VI). The complexes have been characterized on the basis of 1H NMR, elemental analysis,
infrared, molar conductance, magnetic Susceptibilities, and theromogravimetric analysis.
Thermodynamic activation parameters were computed from the thermal data using Broido,
Horowitz-Metzger and Freeman-Carroll method, which confirm first order kinetics and kinetic
compensation effect.
Keywords: Thiazole Schiff Base, Molar conductance, Thermal.
7. Optical properties of Zinc sulfide thin films prepared by spray
pyrolysis
Yashwantrao D. Tembhurkar
ABSTRACT
Spray pyrolysis is simple and inexpensive method for depositing thin films on large area
of glass substrate. The II-VI group semi-conductors are of great importance due to their
applications in various opto-electronics devices. ZnS thin films have been prepared on preheated glass substrate by spray pyrolysis method. The temperature of the substrate was
maintained at 3500C and was measured by pre-calibrated by thermo-couple. From reflectance
and transmittance studies, the band gap (Eg ) is calculated and was found to be 3.02 eV. This
shows the direct transitions. Thickness of the films was calculated by using weighing method
and was of the order of 0.216 µm. The colour of the film was whitish. Grain size was calculated
from scanning electron micrograph was found to be of the order of 0.5µm.
8.
Characterization of Ferric Chloride Non Linear Optical
Material
Rita A.Gharde, Divakar T.Chunarkar
E-Mail-: gharde.rita@gmail.com , divakar.chunarkar@rediffmail.com
ABSTRACT
Well-characterized single crystals are the building blocks of recent technologies of the modern
science. Several important technologies like microelectronics, optoelectronics, communication,
computer, photonics, laser information, science, biosensor and nuclear science etc. Elements and
their chemical compound are found in three state i.e. solid, liquid and gases. Crystal growth is a
vital and fundamental part of the material science. The job of the crystal growth is to prepare
large specimen of crystalline material such that there is complete crystallographic continuity
across a given specimen in all direction. There are two principal reasons for the deliberate
growth of single crystal.
1) Many physical properties of solid are obscured or complicated by the effect of grain
boundaries.
2) The full range of tensor relationship between applied physical cause and observed effect can
be obtained only if the full internal symmetry of the crystal structure is mentioned throughout the
specimen.
Most of the industrial application of crystallization involves crystallization from melt. Melt
growth is commercially the most important method of crystal growth.
Knowing the enormous importance and technique relevance of this high technology crystal
growth area Universities and colleges are introducing this subject to the student at various
levels.Today the growth of single crystal is both scientifically and technologically important, and
the application of such crystal at the range from electronics to thermal management to synthetic
gemstones.
Key words: - Non linear, Crystal Growth, Dielectric constant.
9. Inorganic Phosphors For Plasma Display Panel.
J. T. Ingle, R. P.Sonekar,S. K.Omanwa
.
ABSTRACT
The Excitation and Emission characteristics with photoluminescence properties were
reviewed for the phosphors which were reported, applied, developed and suggested for Plasma
Display Panel (PDP).The various mechanism of energy transfer in host crystal with activator,
sensitizer ions were explained. Improvements and development of PDP phosphors for Next
generation HDTV, Flat panel, and mercury free tubes were considered.
Keywords: Inorganic Phosphor, Photoluminescence, PDP, Flat Panel
10. Synthesis Of Narrow Band UVB Phototheropy Phosphor
LaB5O9:Pr-Gd
A. B. Gawande1, J.T. Ingle, R.S. Palaspagar, R.P. Sonekar , S.K. Omanwar
ABSTRACT
The powder samples of the narrow band UVB emitting borate phosphor LaB5O9- Pr3+Gd3+ has
been prepared by a novel solution Combustion method. The formation of the samples was
confirmed by powder XRD technique. The photoluminescence properties of the borate
phosphors have been investigated. The phosphor LaB5O9: Pr3+- Gd3+ shows strong absorption
over a wide UV range from 200 – 400 nm. Upon excited by 254 nm UV radiations, LaB5O9:
Pr3+-Gd3+ shows intense narrowband UVB emission around 311 nm. The optimum
concentrations of Pr3+ and Gd3+ are 2% and 10% respectively. In this phosphor no host excitation
was observed which indicates the efficient energy transfer from Pr3+ to Gd3+.
Keywords: Borate, UVB Emitting Phosphor, Phototherapy, Combustion synthesis, Photoluminescence.
11. Synthesis And Photo luminscence Of CaSO4: Eu 3+
Phosphor
S.T.Taide, N.B.Ingle, S.K.Omanwar
ABSTRACT
In this paper the synthesis and Photoluminescence of Caso4: Eu3+ phosphors has been
studied. TheCaso4 phosphors doped for different concentrations of Eu (1,3,5 mole %)have
been prepared by co-precipitation method. The sample shows maximum peak of intensity for
5% doping of Eu3+.The excitation at 254nm and emission at 615nm of Photoluminescence
was investigated. The sample shows strong emission around 611nm.
Keywords: Photoluminescence ,phosphors, excitation, emission.
12. Synthesis Of Polyphenylene Sulfide (PPS) Composite
Through Chemical Route
A S Rahate, K R Nemade, S A Waghuley
ABSTRACT
Conducting polymer has received immense attention due to high conductivity because of
doping. The synthesis of Polyphenylene sulfide (PPS) composite is done through chemical
route using AlCl3 as Lewis acid. The Lewis acid/monomer stichometric ratio was taken to
99:1. The polymerisation confirms through Fourier transform infrared (FTIR) analysis. The
crystalline as well as amorphous phases in composite were successfully probed by FTIR
analysis.
Key words: Polyphenylene sulfide, Chemical route, AlCl3
6
13. Surface Plasmon Resonance Study In CeO2 Quantum
Dots
K.R.Nemade, S.A.Waghuley
.
ABSTRACT
This study was designed to examine the ability of a semiconducting metal oxide to act as a
material capable of supporting surface plasmon resonance (SPR). Here we have reported the
synthesis of CeO2 quantum dots (QDs) by chemical route. The CeO2QDs so formed were
characterized by using FTIR, TEM and UV-Visible spectroscopy. The surface plasmon
resonance of CeO2 QDs was studied in range 200-1100 nm using UV-VIS analysis.
Keywords: Surface plasmon resonance, CeO2, Quantum dots
14. Study Of Chemically Synthesized Polythiophene
N.S.Wadatkar, S.A.Waghuley
ABSTRACT
The polythiophene (PTh) were synthesized by chemical oxidative polymerization
method by using ferric chloride (FeCl3) as an oxidant in aqueous medium at room
temperature. The hydrogen peroxide (H2O2) was used as a catalyst. During polymerization,
different concentration (0.2-0.4 M) of FeCl3 was taken. The prepared samples of PTh were
analysed by FT-IR technique to know the bond formation and hence confirmation of
materials.
Keywords: Polythiophene; Chemical polymerization; FTIR
7
15. Structural study of Ni(NO3)2 doped polypyridine-polyvinyl
acetate (PVAc) composite films.
Gopal. R. Dhokane, Chandrakant. S. Ulhe, Shrikrishna. P. Yawale, Sangita. V. Pakade
ABSTRACT
The conductive polymer composites are attractive materials for use in existing and emerging
technologies due to their low cost and light weight. Doped polymer composites are expected to
play an important role in the technical implementation of conducting polymers. Pyridine base
polymers have attracted much interest because of their oxidative stability, photo physical
characteristics and electron transport properties. Such electrically conductive polymer
composites have been prepared by using metal powders and flakes as filer into insulating
polymer materials.
This research paper aims to shed light on the synthesis of polypyridine-PVAc composite films
prepared by chemical oxidative polymerization method, by changing oxidizing agent as well as
doping materials. These composite films have been characterized by X-ray diffraction (XRD),
scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR).
In the present work XRD technique has been used to investigate the amorphous or crystalline
nature of the samples. X-ray diffraction pattern shows crystalline nature of the samples. The
appearance of sharp peaks in diffractograms of all samples may indicate some degree of
crystanality in the composites. The average crystallite size is estimated by using Scherer’s
formula D = kλ/βcosθ. For all samples of series I the crystalline nature is seen in the SEM
pictures which reflected in XRD spectra. The crystalline nature of polypyridine-PVAc
composite films is due to dopant Ni(No3)2 and non uniform porous and voids are seen. The
porous size varies from ~ 1 to 1.5 μm.
16. Acquisition of Soil parameters and Data Logging using
Advance microcontroller
G.D.Agrahari , D.S.Dhote, S.G.Shende
ABSTRACT
In India precision agriculture is the developing direction of modern agriculture. How to
acquire information about the soil parameter is the key problem of precision agriculture.For
accurate measurement for analysis of pH , Electrical conductivity (EC) and Temperature data
is required for a multiple of applications ranging from the agricultural sector to clinical and
scientific laboratories. In many of these applications an inexpensive portable unit is needed.
This paper describes a low cost and low power pH, Electrical conductivity(EC)&Temperature
sensing and data logging system using an AVR microcontroller with pH, EC & Temperature
sensor. Accurate measurement and analysis of pH, Electrical conductivity
8
(EC)&Temperature data is required for a multiple of applications ranging from the
agricultural sector to clinical& scientific laboratories. In many of these applications an
inexpensive portable unit is needed. This paper describes the sensor data acquisition and data
logging system including details of its construction, capabilities and applications.
Key Words- Introduction, Data acquisition, Data logging, Software Design, Conclusion.
17. Pico-Second Technique For Dielectric Measurement Of
Liquids
Yogesh S. Joshi, Kamalakar S. Kanse, M.P.Lokhande, Ashok C. Kumbharkhane
ABSTRACT
The picoseconds time domain reflectometry technique provides information regarding
complex permittivity in the frequency range of 10MHz to 30GHz. The Tektronix model no.
DSA8200 Digital Serial Analyzer sampling oscilloscope along with sampling module 80E08
has been used for measurement. The dielectric permittivity spectra of 2-alkoxyethanols with
Polar and nonpolar liquids are measured at 25˚C. The dielectric data were fitted to ColeDavidson model. The static dielectric constant (ε0), relaxation time (τ), dielectric constant at
high frequency (ε∞) and distribution parameter (β) were determined by using least square fit
method. The Excess permittivity (ε0E) and Kirkwood correlation factor (geff) is calculated to
obtain the information about H – bond complex formation. The maxima of ε0E at particular
concentrations of binary mixtures suggest the formation of stable complex structure.
18. Dielectric properties of Ion Exchanged Fly ash based Zeolite
A. N. Kalyankar, A.A. Johi, A. L. Choudhari
ABSTRACT:
In India coal fly ash is generated on a large scale by thermal power stations. This hazardous,
solid waste material can be used as a source material for synthesizing novel materials like
zeolites. The solid waste material fly ash was used to synthesize zeolite NaP1 with general
formula |Na5.92(H2O)11.28 | [Si9.92Al6.08O32] using microwave treatment by hydrothermal
method with NaOH. The zeolite NaP1 is a low siliceous zeolite. The material was properly
ion exchanged so as to obtain Cu- NaP1 form. All compositions show cubic structure with
space group I-4. The samples were characterized by variety of physical techniques X-ray
diffraction (XRD), IR and scanning electron microscope (SEM) techniques. The dielectric
parameters like dielectric constant (’), dielectric loss (’’), ac conductivity () were
measured for NaP1 and Cu-NaP1 in the frequency range 20 Hz –1 MHz at room temperature.
The conductivity of all the samples was studied. It is observed that the conductivity of NaP1
is less than Cu-NaP1 .It is attributed to greater homogeneity and smaller grain size.
9
Keywords: Fly Ash, Zeolite NaP1, conductivity,
dielectric parameters,
19. Studies on spray deposited Eu Se thin films
M. M. Betkar, G. D. Bagde
ABSTRACT
Spray pyrolysis method was employed for deposition of europium selenide (EuSe) thin films
on non-conductive bare glass substrates in aqueous precursor medium at increasing substrate
temperatures. The synthesized films were studied by XRD, SEM and UV-Visible
spectrometry. The effect of substrate temperature on morphological and optical properties has
been investigated. The XRD studies reveal that, the films are polycrystalline in nature and the
deposited material was europium selenide. The SEM analysis conforms the formation of
bunched grains on overall substrate with cracks on flat thin film surface.
Key words : band gap; thin films; EuSe; spray pyrolysis; XRD
20. Effect of Cr Ions On Physical Properties of Cu-Zn Ferrite
nano-particles
Santosh Jadhav, S.K.Gore, S.M.Patange, K.S.Lohar
ABSTRACT
The aim of the present work is to study the effect of Cr3+ ions on the structural and magnetic
propreties of Cuo.7,Zn0.3CrxFe2O4 9WITH X=0.0,0.1,0.2,0.3,AND0.4) prepared by
chemical coprecipation method. The properties studied by means of X – ray diffraction and
magnetization measurements. The crystal size calculated using Scherers formula varies
between 28nm and 36nm. The variation of lattice parameter a with X does not obey Vegards
law. The behavior of hopping length with x is attributed to the variation of lattice constants
with the concentration x. The saturation magnetization of each sample was measured using a
high field hysteresis loop technique. Magnetization decreases as concentration x increases.
Keywords: Ferrites,X-ray Diffraction, Saturation Magnetization
10
21. XRD & SEM Studies Of Ag2O: B2O3: SiO2 Glass Ceramics
For Electrochemical View Point
Ajay Lad
ABSTRACT
Ag2O: B2O3: SiO2glass system is prepared by conventional melt quenching
techniques. Glass ceramics, materials prepared by heat treatment with times of these glasses,
have a variety of established uses dependent on their uniform reproducible fine grain
microstructures, absence of porosity, good packing density and high-strength, is synthesized,
and structurallycharacterized for changing the nature of glass into glass ceramics.
Keywords:Glass, Glass ceramics, XRD, SEM, DTA, conductivity
22. Temperature Dependent Conductivity Of Li2SO4 - Li2O:P2O5
System
A.B.Lad, D.T.Dongare
ABSTRACT
The glass compositions xLi2SO4 - (100 – x) Li2O:P2O5 (x = 5, 10 & 15 Wt 0/0) have been
prepared by using conventional rapid (melt) quenching technique The electrical conductivity
increases with varying the temperatures due to the changing the concentration of Li 2SO4.The
result indicates that an addition of Li2SO4 significantly enhances the ionic conduction by
several orders of magnitude compared to that of glass matrix made of only network formers
(P2O5) and network modifiers (Li2O).
Keywords: Li2SO4 - Li2O:P2O5 system, DTA, Conductivity
11
23. Synthesis and Characterization of Benzoquinone- Diamine
polymer
N.A.Rashidi Md Fazil Md Nazeer
ABSTRACT
An attempt has been made to synthesize Benzoquinone-diamine polymer by
polycondensation reaction of aromatic diamine with p-benzoquinone. Quinone-diamine
polymer was obtained by the condensation reaction of 0.01 mole of diamine with 0.01 mole
of p-benzoquinone by conventional heating under as well as by microwave irradiation. The
resulting polymer was black in colour, slightly soluble in alcohol & other common organic
solvents. The structures of all these polymers have been confirmed on the basis of elemental
analysis, chemical properties, IR and PMR- spectral data. The synthesized polymer is
expected to possess electrical conductivities.
Polymer with aromatic quinone imine backbone=
N
N
=
n
Polymer fragment
Keywords: P-Benzoquinone. P-phenylene diamine, poly-condensation
24. Influence of Zinc Source on Properties of Zinc Sulfide Thin
Films
Vijay B. Sanap, A.D. Suryawanshi, S. S. Kawar, B.H. Pawar
12
ABSTRACT
A nano-crystalline zinc sulfide (ZnS) thin films were prepared by chemical bath
deposition technique (CBDT) using various zinc sources. Zinc sulfate, zinc chloride,
zinc acetate and zinc iodide were used as zinc ion source whereas thiourea was used
as sulfur ion source. Ammonia and TEA were used as complexing agents. All the
physical conditions were kept constant while growing the films.
Prepared films were characterized by x-ray diffraction (XRD), scanning electron
microscope (SEM) and UV-VIS spectrophotometer. All the films show pure cubic
structure with nanometer grain size. The effect of various zinc sources on structural
and morphological properties of the films have been studied for optoelectronic
applications.
Keywords: Zinc sulfide, CBD, nano-crystalline thin films.
25. Artificial Intelligence Play An Important Role Using
Various Sensors For Identification Of Person Iris
R.D. Chaudhari
ABSTRACT
Iris recognition is one of important biometric recognition approach in a human identification
is becoming very active topic in research and practical application. Iris. region is the part
between the pupil and the white sclera. This field is sometimes called iris texture. The iris
texture provides many minute characteristics such as freckles, coronas, stripes, furrows,
crypts, etc . These visible characteristics are unique for each subject. Such unique feature in
the anatomical structure of the iris facilitates the differentiation among individuals. The
human iris is not changeable and is stable. From one year of age until death, the patterns of
the iris are relatively constant over a person's lifetime. Because of this uniqueness and
stability iris recognition is a reliable human identification technique.
Neural network based decision support system,is used for persons identification from IRIS
recognition. In this case DECISION SUPPORT SYSTEM (D.S.S.)will work as a classifier
estimate non linear and complex decision boundaries between different classes. The neural
network configuration using MLP,RBF, SVM. The various parameter of neural network will
be varied carefully in order to obtained the optimal configuration in view of minium mean
square error and maximum classification accuracy and simplicity of neural network model,
the available data set ratio of these partition will varied gradually. In each of neural network
configuration. The variable parameter test and train by neural solution software.
Finally an optimal neural network based D.S.S. will be designed in each category of neural
network and then shall be overall comparison among different neural network configuration.
In this case of decision support system confusion matrix and classify accuracy are important
to identify person iris image
13
26.
Study of Plant Leaf Morphology and Stress Effect on Plat
Growth by FTIR Spectroscopy.
L.S Ravangave., B. H. Pawar
Abstract:
Absorption and Fourier Transfom Infrared spectroscopy (FT-IR) are employed to
for analysis of plant pigments and investigation of effect nutrients on the growth of plant. The
plant Mogra (Jasminum officinale) was selected for study. The chlorophyll pigments of pant
exhibits the action spectrum of slandered chlorophyll plant pigments. The chlorophyll-a,
chlorophyll-b and total chlorophyll, was estimated, from the absorption spectrum of young
cotton leaf. The absorption ratio A430/A663 obtained using the data of absorption spectra.
The effect of nutrient stress on the vibrational frequency of IR spectra was studied.
Key words: nutrient deficiency, FT-IR Spectroscopy, photosynthesis
27.
Simultaneous Realization of Multiple NAND Optical Logic
Gates using four Beam Interferometer
Kamlesh Alti, Prafull Chapate, Kamal Singh
Abstract
This paper proposes to use four beam interference pattern for the simultaneous realization of
multiple NAND optical logic gates without using any nonlinear phenomenon. Advantages
and some challenges of the proposed method are also discussed.
Keywords: Optical logic gates, Multiple Beam Interferometer
28. TEMPERATURE DEPENDENT DIELECTRIC STUDY OF PENTENENITRILE
WITH 1,2 DICHLOROETHANE AT 450C
I. G. Shere, V. P. Pawar
ABSTRACT
14
The
dielectric
relaxation
study of
2-Pentenenitrile(PN)
with
1,2
Dichloroethane(DCE) mixture has been carried out at temperature 450C in the frequency
range of 10 MHz to 20 GHz using time domain reflectometry (TDR) for 11 different
concentrations of the system. The static dielectric constants for the mixtures have been fitted
with the modified Bruggeman model. The investigation shows that there is stronger
molecular interaction between the constituent molecules
KEYWORDS: Bruggman factor, Nitrile group, chlorine group, Time Domain Reflectometer.
29. Synthesis, Antimicrobial study of 2-(2-amino-4-aryl-6H-1,3- oxazin -6yl)-4-substituted-naphthalen-1-ol
B. P. Khobragade , P.T.Kosankar
Abstract :
2-Acetyl- 4-substituted-1-naphthol have been synthesized from 4-substituted-1-naphthol by
refluxing 4-substituted-1-naphthol with glacial acetic acid in presence of fused ZnCl2.
Chalcones were synthesized from from 2-acetyl-4-substituted -1-naphthol by condensing it
with aromatic aldehydes. Then these chalcones were cyclized with urea in the presence of
alcoholic KOH to give titled oxazins. The synthesized compounds were characterized by
elemental analysis, 1H NMR, IR Spectroscopy. All Newly synthesized compound were
scanned for their antimicrobial activity and all newly synthesized compounds shows an
excellent antimicrobial activities.
Key Words: Synthesis , oxazin , Antimicrobial activities , antifungal activities.
30. Physico-Chemical Analysis Of Soil Collected
From Babhulgaon Region, Dist. Yavatmal (M.S.)
P. P. Raut , P.D.Ekbote
15
ABSTRACT
The present study has been undertaken to investigate the physical and chemical
characteristics of soil samples collected from ‘Babhulgaon Region’, Dist. Yavatmal. The soil
characterization was carried out for the parameters like particle size distribution, bulk density,
maximum water holding capacity, available water capacity, hydraulic conductivity, soil pH,
electrical conductivity, cation exchange capacity, free calcium carbonate, and organic carbon.
During the course of study period fluctuation in the various parameters were recorded. The
variety of values were observed in the different parameters due to the soil quality in different
places.
Key words: Soil, Bulk density, Electrical conductivity, pH.
31. D.C. Electrical Conductivity of doped polymer blend thin
films
Meeta Saxena, V. S. Sangawar
ABSTRACT
The PS/ PVC (Polystyrene/ Poly vinyl chloride) blended polymer thin films doped with Meta
Nitro Aniline (MNA) have been prepared by isothermal evaporation technique having
different dopant ratio (0.1%, 0.5%, 1%, 5% MNA in 50% PS + 50% PVC). The conductivity
values are found to be depending on the dopant ratio in the polymer blend and exhibit the
Arrhenius behaviour in the temperature range studied.
Key words: Polystyrene, Poly vinyl chloride, Meta Nitro Aniline, Conductivity, Poly blend.
32. Mechanism Of Plasma Formation In DC Glow
Discharge By Using Solid Liquid Interface
K. P. Kadam
16
ABSTRACT
Spectral study of the glow discharge of the material helps in study of the chemical
composition of the material. Under this spectrochemical study the elements in the material
excited in the plasma produced between solid and liquid interface. The plasma parameters in
DC glow discharge generated by current source. The used method is very low cost and quick
results obtained. A variation of electrolytic current with the applied dc voltage during glow
discharge in atmospheric pressure gas using electrolytic solution as the anode and cathode
were carried out. This behavior investigated as the tunneling phenomenon.
Keywords: Glow discharge , Solid and liquid interface, tunneling, Plasma parameters.
33. Optical and Surface morphology of Zinc Tartrate Crystals
S.J.Nandre, S.J.Shitole, S.S.Sonawane, R.R.Ahire
ABSTRACT
Crystals of Zinc Tartrate were grown by a simple gel technique using single diffusion
method. The optimum growth conditions were established by various parameters such as pH
of gel solution, gel concentration,gel setting time, concentration of reactants etc. Crystals
having different morphologies and habits are obtained. The crystals were characterized using
Scanning electron microscope (SEM), UV, Energy dispersive X – ray spectroscopy (EDAX)
and Electrical resistivity measurements.
Key words: - Gel Grown zinc tartrate crystals, SEM, UV, EDAX,
34. Luminescence of Some Eu3+ Activated Oxy sulphate
S.J. Tidke , D.H. Gahane
17
ABSTRACT
The Eu3+ activated phosphors, La2O2SO4:Eu3+ and Y2O2SO4:Eu3+, were prepared by the
solid-state reaction. Photoluminescence (PL) results showed that the phosphor can be
efficiently excited by UV-visible light from 250 to 410 nm, and exhibited bright red
emission. The results showed that the relative PL intensity increases with Eu3+ concentration
increasing until a maximum intensity is reached, and then it decreases due to concentration
quenching. The present synthesized phosphors has higher emission intensity upon excited
with 268 nm light.
35. Investigation of Change in Color of the Glow Discharge of the
Elements by Fractional Abundances
K. P. Kadam, A. P. Pachkawade
ABSTRACT
Investigation of change in colour of the glow discharges of various elements in the interface
of solid and liquid have been carried out and comes to the conclusion that monochromatic
light at various wavelengths can be generated using glow discharge. In order to investigate
the optimum parameters for getting good monochromatic sources applied, we obtained
fractional abundances of the elements like Li,Na,Mg,K,Ni,Cu,Zn,Se,Zr,Cd,Fe and Ti as a
function of electron temperature with the help of electron impact excitation rate coefficients
and recombination rate coefficients.
Keywords: Glow discharge, electron temperature, fractional abundances
36. Study on effect of SrCl2 doping on crystal structure and SHG
efficiency of KDP
18
P. S. Ambhore, A. B. Naik, S. K. Devade, G. G. Muley
ABSTRACT
The single crystals of pure and strontium chloride doped potassium dihydrogen phosphate
(KDP) crystals were grown. The crystals were grown by using low temperature solution
growth method and allowing slow evaporation of solvent at constant temperature. Double
distilled water was used as a solvent in the crystal growth. The grown crystals were subjected
to the structural and second harmonic generation efficiency study. The lattice constants and
SHG efficiency of doped crystals found to be increased in doped crystals.
37. Nanocrystalline CdS Thin Films Prepared
By Chemical Bath Deposition
M. N. Musale, S. K. Devade
ABSTRACT
CdS thin films were prepared using CBD method. Cadmium Sulfide [CdS] thin films
have been used for solar cells. CdS films are prepared by chemical bath deposition. The CBD
method is based on the controlled precipitation of the materials in such way that the
precipitation occurs uniformly in to the substrate. In addition film formation on the substrate
takes place when the ionic product exceeds the solubility. For cadmium sulfide CdS thin
films were prepare solution bath containing CdSO4, Thiourea (CH4 N2S) and Ammonium
Hydroxide (NH4OH). The films of different thicknesses were deposited on the glass
substrate. The deposition parameters speed of rotation of substrate, temperature of chemical
bath, pH of solution and deposition time were optimized. The CdS thin films were
investigated using X-ray diffraction (XRD), Fourier transformation, Infrared spectroscopy
(FTIR). This film prepared at 80c C for 60 minutes had cubic phase with homogeneous and
small grains. From the FTIR analysis of the CdS thin films broad absorption band in the
range 3000-3600 per cm. and the peak of CN stretching vibration at 1949 per cm were found.
Keywords: Cadmium sulfide thin films, chemical bath deposition, X-ray diffraction (XRD), Fourier
Transform Infrared Spectroscopy (FTIR).
38. Electrical Behaviour Of Arsenic Borate glasses
19
A.D.Ningurkar, S.P. Yawale, S.S.Yawale
ABSTRACT
The As2O3-B2O5 glasses are prepared in the laboratory by sudden quenching method.
The dc conductivity of the glasses is measured in the temperature range 348 K to 373 K. The
physical properties are also studied. A plot of log σ versus 1/T shows linear behavior for
various compositions of As2O3. The activation energy is calculated from this plot which is
found to be in the range of 0.305 eV to 0.412 eV. The conductivity of these glasses varies
from 10-8 to 10-13 (ohm.cm)-1. The dc conductivity of glasses is As2O3 dependent and it is
observed to be maximum for 20 mol% of As2O3 at 473 K. Ionic conduction is observed in
these glasses.
The values of density are calculated theoretically and experimentally are not in close
agreement with each other. In these glasses the experimental density varies from 2.881 to
3.315 g/cc while the molar volume varies from 30.89 to 43.26 cc per mol.
39. Dielectric study of Solids at 27 mm wavelength microwaves
R.S. Ramshetti, D.P. Garud U.B. , Dindore, S.G. Algude, V. V. Navarkhele
Abstract
The dielectric properties of solids have been measured for 25mm wavelength Microwaves at
room temperatures. The solid samples used in this case are fused quartz, cream Granite,
Green Granite, Brown Granite, Black Granite, and Dark Granite of different lengths.
Similarly some soil samples such as Black Soil, White Soil and Red Soil are used for the
study of dielectric properties.
Keywords: Granites, Soils, waveguide, Microwave X-band spectrograph.
40. Magnetic properties of NiFe2O4 + KNbO3 Composites
20
U. B. Dindore, D. P. Garud, R. S. Ramshetti, S. G. Algude, K. M. Jadhav
ABSTRACT
Magneto-electric composites with ferrite- ferroelectric composition (1-x) NiFe2O4 + (x)
KNbO3 in which x varies from 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0 were prepared by ceramic
method. X-ray analysis are conformed by single phase formation at x =0.0 and x =1.0
compositions whereas the presence of both phases is shown in
x =0.2, x = 0.4, x = 0.6
and x = 0.8 compositions. All the samples have show linear magneto-electric conversion in
presence of static magnetic field.
Keyword: Composites, X-ray diffraction, Magnetic properties.
41.
Studies On Nanocrystalline Chalcogenide Thin Films
Deposited By Chemical Bath Technique
S. S. Kawar, K.K. Hurde, A. P. Pachkawade, B. H. Pawar,
ABSTRACT
We deposited CdS and ZnS chalcogenides thin films on different substrates by
Chemical Bath Deposition Technique. Structural, Surface Morphology and Optical
properties of as deposited CdS and ZnS films were investigated by XRD, SEM, FTIR
and UV-VIS Spectrophotometer. It is found that, the average grain size of CdS and ZnS
in the films is 08 to 130nm and 08 to 113nm. The band gap is also calculated from the
equation relating absorption co-efficient to wavelength. The band gap indicates the film
is transmitting within the visible range and the band gaps changes because of the grain
size of the CdS and ZnS in the films. We also observed that, the change in preparative
parameters affects the deposition rate of thin films. From the observation, it is clear that
the growth rate increases as the deposition temperature, deposition time, molarities of
the solution increases. It is also clear that the growth rate increases as the film thickness
and grain sizes increases while band gap decreases.
. Diagnosis of Degree of Malignancy Using Synchronous
Luminescence Spectroscopy
42
21
P. B. Minase, S. K. Devade , B. H. Pawar
ABSTRACT
In the present work we have collected statistical data related to cancer and analyzed it.
The statistical analysis and data collection shows that in some cases the blood flow may get
infected and become foreign material for the body and may cause the cancer. The
investigation of light induced fluorescence spectroscopy becomes the powerful tool in the
medical and agriculture field. In this technique, the discrimination potential depends on the
various emission and excitation spectra, which could change the tissue morphology and
composition due to the repeated exposure during the spectral measurements. The recorded
spectra show that their structures are different from each other and from the difference the
development of cancer may be clearly identified. From the study of SLS it is clear that there
is increasing in the emission of NADH and Flavin as the tissue progresses from normal to
malignant
Keywords: SLS, LIF, Cancer, NADH
43. Efficient Microwave-assisted Synthesis and Characterization
of Thiazines derivatives
A. K. Rathod
ABSTRACT
A convenient microwave irradiation method for the synthesis of Cyclohexanone on
Claisen-Schmidt condensation and Aldol condensation with various aromatic aldehydes in
presence of dilute Sodium hydroxide affords the corresponding2,6-diarylidene
cyclohexanones (1)- Further, these compounds (1) were subjected to cyclocondensation With
thiourea, catalyzed by aqueous potassium hydroxide to form 4-ary|-8-arylidene-2-imino-5,6dihydro-4H,7H-(3,l) benzothiazines (2). The structures of synthesized compounds were
characterized by their spectral studies.
Keywords: Green chemistry approaches Synthesis, Benzothiazines.
44.Synthesis of Ni-Co-Zn ferrite nanoparticles by Sol-gel method
and their characterization
22
R. B. Bhise, S. M. Rathod, A.K.Supekar, A.D. Suryawanshi.
ABSTRACT
Nanocrystalline Ni 1-x Cox Zn1+x Fe2O4(x=0.2, 0.4 and 0.6) ferrites were synthesized by Solgel Auto Combustion method. The powders were sintering at 400oc and 700oc for 2 h to
densify properly. The samples were characterized by X-RD, SEM and FT-IR. The X-RD
confirms single phase spinal Structure. The Lattice constant of the prepared powder samples
were calculated from X-RD peaks and it increases gradually with increasing in Co and Zn
content. The FT-IR spectra confirmed that synthesis material is ferrite. Morphology of ferrite
powders were investigated by using SEM.
Key Words: Sol-gel Auto Combustion method, Nano crystalline, X-RD, FT-IR, SEM.
45. Microcontroller based conductivity meter
A. R. Khobragade
ABSTRACT
An embedded system is a combination of a piece of microcontroller based hardware and
suitable software to understand a specific task. A real time microcontroller based
conductivity measurement set-up has been developed to measure the dc conductivity of some
polymers at various temperatures.
This paper explained the multichannel data acquisition system interface with the
microcontroller to measure the dc conductivity of the sample at various temperatures. A
microcontroller 89S52 is employed for this hardware.
Keywords: DC conductivity measurement, Temperature measurement, Data acquisition system,
Microcontroller.
46. Memory Based Auto-alarm System
23
N. D. Khaire, S. G. Motke, P. T. Hamjade
ABSTRACT
A Memory Based Solid State Auto-Alarm System has been designed. It can be used
as an alternative to manually operated electric bell or siren used in schools and industries. It
is a generalized design and can be set up for any desired time-table. It is simple, self
controlled and has very high accuracy of time. The design includes solid state memory,
counters, comparator, mono-shots, tri-state buffers etc.
Keywords: Auto-Alarm, period bell, time-table, universal timer.
47. Physico-Chemical Characteristics Of Water Quality Of
Bemla Dam Babulgaon, District Yavatmal.
P.H.Bhagwat , S.E.Bhandarkar
ABSTRACT
The Physico chemical parameter of surface water from Bemla dam of Babhulgaon Dist
Yavatmal is determined during March 2012 for 20 locations . The Physico chemical
parameters are pH, electrical conductance, DO, BOD, COD, TDS, total hardness, total
alkalinity, turbidity; anions includes chlorides, sulphates , nitrates etc.. All the parameters are
found to be within the permissible limit. The laboratory test of the collected water samples
were performed for analysis of various parameters .The methods employed for the analysis as
per standard methods recommended by APHA, WHO, ICMR. The obtained values are
compared with the standard limits. The results of this study reveal that the physico-chemical
parameters are with in the maximum permissible limit of WHO with some slight variations in
some parameters. Hence, water is safe and suitable for domestic, irrigation and drinking
purposes.
Keywords: Bembla dam; surface water; physico chemical parameters; water quality.
24
48. Effect of aluminum substituted on the structural and magnetic
properties of Co-Zn ferrite synthesized by standard ceramic
technique
S. G. Algude,D. P. Guard , R. S. Ramshetti ,U. B. Dindore , P. K. Gaikwad , K. M. Jadhav
ABSTRACT
Composition Co0.7Zn0.3Fe2-xAlxO4 with varying aluminum from 0.0 to 0.1 on the step
of 0.1 has been obtained by standard ceramic technique. X-ray analysis shows that they
are single phase cubic spinel structure. The lattice parameter (a) and X-ray density (dx)
are decreases as the aluminum content x increases. The value of saturation
magnetization (Ms) decreases due to the substitution of aluminum ions in place of Fe3+.
Keywords: Co-Zn-Al ferrite, Structural, Magnetic properties etc
49. Study of Gas-Sensing Properties of Fe2O3 Nanoparticles
Ganesh R.Yerawar, R. B. Lahire, R.C. Shah
ABSTRACT
The development of a low-cost and scalable gas sensor for the detection of toxic and
flammable gases with fast response and high sensitivity is extremely important for
monitoring environmental pollution. In this work, we introduce the method of coprecipitation for the preparation of scalable Fe2O3 nanoparticles for gas sensor
applications. The gas sensing properties of the Fe2O3 nanoparticles (NPs) fabricated by
co-precipitation method was studied. The performance of the NPs in the detection of
toxic and flammable gases such as carbon dioxide, ammonia, liquefied petroleum gas,
ethanol, and hydrogen was evaluated. The Fe2O3 NP-based gas sensors exhibited high
sensitivity and a response time of less than a minute to analytic gases.
25
50. Synthesis and Characterization of Blue Emitting Phosphor
CaAl2B2O7: Eu2+
P. A. Nagpure, S. K. Omanwar
ABSTRACT
Polycrystalline samples of Eu2+ activated CaAl2B2O7 phosphor has been prepared by a
combustion technique with urea as fuel. Photoluminescence (PL) of this phosphor studied
over 210 - 410 nm excitation range for different concentration of activators. The excitation
spectra of CaAl2B2O7: Eu2+ monitored at 462 nm emission consists of two broad bands with
their peaks at about 280 and 350 nm and emission spectra monitored at 254 nm consists of
broad band peaking at 462 nm..
51. Frequency Dependance Of Electrical And Dielectric
Properties Of LiFeO2 Cathode
P.Rosaiah, O.M.Hussain
ABSTRACT
LiFeO2 has been synthesized by hydrothermal method. The XRD spectrum exhibited
predominant (200) orientation at 2Ɵ = 43.63o along with other characteristic orientations
(110), (220), (311), (222) which is attributed to cubic rock-salt structure with Fm3m space
group and the estimated lattice parameter is 4.174 Å. The impedance analysis has been
carried out over a frequency range of 1 Hz – 1 MHz at various temperatures. The ionic
conductivity of the sample is observed to vary from 2.96 x 10-5 S/m to 1.9 x 10-4 S/m by
increasing the temperature from room temperature to 100 oC. The activation energy was
found to be 0.39 eV. The electrical conductivity is observed to be increased with increasing
temperature. The evolution of the complex permittivity as a function of frequency and
temperature was investigated. Several important parameters such as activation energy, carrier
concentration term, ionic mobility and diffusion coefficient have been calculated.
Keywords: Hydrothermal synthesis, LiFeO2, Electrical and Dielectric Properties.
26
52. Photoluminescence Studies of Some Aluminio-Borate
Phosphors
R.S.Palaspagar, A.B.Gawande, R. P.Sonekar, S. K.Omanwar
ABSTRACT
Inorganic Borate host luminescent materials have attracted the interest of many researchers
due to their varied applications. Some of the Alumino-Borates Li3AlB2O6:Eu3+,
YAl3(BO3)4:Ce3+, Li2AlBO4:Eu3+ have been prepared in our laboratory by novel solution
combustion technique. And their photoluminescence have been investigated. The phosphors
Li3AlB2O6:Eu3+ and Li2AlBO4:Eu3+ shows intense peak at 615nm upon excited by 254 nm
radiations and therefore can be good candidate for lamp and display application. The
phosphor YAl3(BO3)4:Ce3+ shows emission at 380nm and 481nm under 254nm excitation.
Keywords: Borate, Aluminio-Borate, Combustion synthesis, Photoluminescence.
53. Study of Conduction Mechanism In Phospo-Vanadate
Conducting Glass
R. V. Barde, S.A. Waghuley
ABSTRACT
The understanding of transport processes in glasses is complicated by the inherent structural
disorder in these materials in comparison with crystalline materials. But as solid electrolytes,
glasses show many advantages over their crystalline or poly crystalline counter parts. In
glasses, there is a possibility for continuously varying the composition of the constituents.
The variation of conductivity with composition is a very useful tool for investigating the
conduction mechanism of glasses. When volid electrolytes possess conductivity due to both
ionic and electronic transport, it is necessary to know the fraction of the conductivity due to
ions and electrons. The phospo-vanadate glassy system (80V2O5-20 P2O5) was prepared by
melt quenching technique. The conduction mechanism was studied by Wagner’s polarization
method at room temperature. FTIR analysis was used to study the principal bond formation in
the material.
Keywords: Vanadate, Glassy system, Wagner’s Polarization method
27
54. Study of Plant Physiology by Synchronous Luminescence
Spectroscopy
A.D.Suryawanshi, V.B.Sanap, A.S.Padampalle, D.S.Birajdar, B.H.Pawar
ABSTRACT
In this technique the fluorescence signal is recorded by simultaneously scanning both
the excitation and emission wavelengths at same speed with a fixed wavelength interval
between the excitation and emission wavelengths. Since it takes the advantage of the
absorption as well as emission properties of the molecules, it leads to considerable amount of
simplification in the measured fluorescence spectral profile. In the present attempt we are
going to use the synchronous luminescence spectroscopy for the study of plant health and
classification. As per our information the type of measurements made by us is the first report
of this kind. It is seen that more information can be obtained from the analysis of
synchronous luminescence spectra of the plant leaves.
Key words: Photosynthesis, Deuterium/Halogen source, SL spectra.
55. Application of Metal Oxides ZnO-SnO2 As a Carbon dioxide
Gas Sensor
S.B. Unhale , S.P. Yawale , S.S. Yawale
ABSTRACT
The ZnO-SnO2 sensors using powders of ZnO and SnO2 weight ratio’s of 0-100 were
prepared by screen-printing technique on a glass substrate. For electrical contacts, electrodes
of conducting silver paste were printed on adjacent sides of the sensor film. 60ZnO-40SnO2
sensor was used for CO2 gas sensing investigation. Sensitivity of sensors at different
concentrations of CO2 gas was measured by a voltage drop method at room temperature (303
K). At certain higher concentration of CO2 gas, saturation effect was observed. The response
and recovery time were found small in 60ZnO-40SnO2 sensor. XRD, SEM and TG were used
to analyze the ZnO-SnO2 powder.
Keywords: ZnO-SnO2; Screen-printing technique; Carbon dioxide gas;
56. Ultrasonic Absorption & Thermo acoustic Study of Some
Polar Bio-liquid mixtures
28
N. R. Pawar , O. P. Chimankar, V. D. Bhandakkar
ABSTRACT
Cinnamon capsules are sold as food supplements or as dietetic foods to reduce blood
sugar levels in type II Diabetes mellitus. About 40% of methanol is converted to
formaldehyde which is used for production of plastics, plywood, paints, explosives and
permanent press textiles. Methanol is used as a fuel in vehicle. Recent research documents
anti-cancer activity of cinnamaldehyde observed in cell culture and animal models of the
disease.
Ultrasonic absorption has been measured at different frequencies 1 MHz to 10 MHz
in the bio-liquid mixtures of methanol with cinnamaldehyde over the entire range of
composition at five different temperatures 293 K, 298 K, 303 K, 308 K and 313 K. The
ultrasonic velocity (u), density (ρ) and viscosity (η) has been measured in the bio-liquid
mixtures of methanol with cinnamaldehyde. Derived thermo-acoustic parameters acoustic
impedance (Z), Vander Waal’s constant (b), free volume (Vf), adiabatic compressibility (βa),
internal pressure (πi), and free length (Lf) has been calculated. The result has been used to
discuss the nature and strength of intermolecular interactions in the system. The linear and
nonlinear behavior of these parameters can be used to deduce information about the liquid
systems. These variations depend on structural changes due to intermolecular interactions in
short regions around the molecules.
57. Chain Length effect on Dielectric Relaxation and ThermoPhysical Behaviour of Organic Polymers Through Relaxation
Dynamics Using TDR
Arvind V. Sarode, Ashok C. Kumbharkhane
ABSTRACT
Temperature and Chain length effect on dielectric relaxation and thermo-Physical behaviour
of organic polymers which have Pharmaceuticals and biological importance play an
important role in deciding molecular and structural dynamics has been studied through
relaxation dynamics below room temperature. Organic liquid polymers such as
Poly(propylene glycols) with molecular weights 425, 1000 and 2000 g mol-1,Poly(ethylene
glycols) having molecular weights 200,300,400 and 600 g mol-1 has been studied in its pure
form using Time Domain Reflectometry Technique in the frequency range 10 MHz – 20
GHz and temperature range 250C- 000C. Dielectric relaxation time (τ0) obtained using TDR
is used to study various thermo-physical parameters such as Free energy of activation
(ΔFτ),entropy of activation (ΔSτ) and enthalpy of activation (ΔHτ) for the polymeric systems.
The average free energy of activation ΔFτ for both PEG and PPG molecules was found to be
in the range 4–5 kcalmol−1. The values of entropy ΔSτ for PEG-200, PEG-400, PEG-600
and PPG-425, PPG-1000 molecules were found to be positive while entropy ΔSτ for PEG300 and PPG-2000 molecules was found negative, which confirms that the configuration of
PEG-300 and PPG-2000 involved in the dipolar orientation has an activated state, which is
more ordered than the normal state compared to PEG-200, PEG-400, PEG-600 and PPG425,PPG-1000 molecules.
29
Keywords: Poly(Propylene glycol);Poly (ethylene glycols); Dielectric Relaxation; Thermo-Physical Parameters.
58. Dielectric Properties of PbO-B2O3 and PbO-ZnO-B2O3
Glasses
S.G.Motke
ABSTRACT
A series of lead borate glasses with formula [x PbO- (100-x) B2O3] and lead borate glasses
containing zinc oxide [x PbO- y ZnO- (100-x-y) B2O3] were prepared by usual melt and
quench method. Detailed studies on dielectric properties viz. dielectric constant (ε’) and
dielectric loss (ε’’) were investigated as a function of frequency (103 Hz to 106 Hz) and
temperature range (313K to 573K). The study of frequency dependence of both dielectric
constant (ε’) and dielectric loss (ε’’) showed a decrease of both quantities with increasing
frequency. The dielectric loss variation with the temperature has exhibited dielectric
relaxation effect.
Key words - DIELECTRIC PROPERTIES ,borate glasses , dielectric constant ,
59. Crystal structural and SHG efficiency study on NaCl doped
KDP crystals
P. S. Ambhore, A. B. Gambhire, S. K. Devade, G. G. Muley
ABSTRACT
The effect of NaCl doping on crystal structure and second harmonic generation efficiency of
potassium dihydrogen phosphate (KDP) crystals is being presented. The single crystals of
pure and NaCl doped KDP were grown by low temperature solution growth method using
water as a solvent in the crystal growth. The lattice constants found to be increased in doped
crystals. The SHG efficiency of 1mole% doped KDP found to be less as compare to the KDP
but for higher doping the SHG efficiency has been increased.
30
60. Photoluminescence Characterization of Europium Doped
Zirconia
V. G. Thakare, N. V. Bhatkar, V. B. Bhatkar
ABSTRACT
Zirconia is one of the important ceramics which has unique properties .The excellent
electrical, mechanical, optical and thermal properties of Zirconia, makes it a good choice for
application such as: structural materials, thermal barriers coating, solid oxide fuel cell
electrolytes, air-fuel ratio sensors for automotive applications and semiconductor materials,
its stable photochemical properties makes it directly applicable to photonics. As reported in
literature, Zirconia can be used as a catalyst in various reactions such as: isomerization of
alkanes, dehydration of alchohols, and decompotions of nitrous oxides. Zirconia implants are
becoming increasingly important in the field of dental medicine because of their good
mechanical properties, biocompatibility, and for aesthetic reasons. Zirconia (ZrO2) and Yttria
stabilized Zirconia(Y-ZrO2) have wider applications such as hip and knee prostheses, hip
joint heads, temporary supports, tibial plates, and dental crowns. Zirconia exhibits three wellestablished polymorphs, the monoclinic, tetragonal and cubic phases. The structures of the
tetragonal and the cubic phases of zirconia can however be stabilized at room temperature by
the incorporation of many different metal cations. To determine the structure of zirconia and
stabilized zirconia prepared by different methods and at various temperatures, the
photoluminescence study of Zirconia and europium doped zirconia was undertaken. Here we
report the photoluminescence characterization of the doped and undoped Zirconia.
Keywords: Zirconia, Photoluminescence, Europium.
61. Exploitation of Poly pyrrole as Ammonia Gas Sensor
K. B. Raulkar, S. S. Yawale, G. T. Lamdhade, S. P. Yawale
ABSTRACT
In the present work, polypyrrole (PPy) is prepared and used to sense ammonia gas. SnO2 and
Al2O3 were used as substrates which are having more porosity. The thick layers of PPy, SnO2
and Al2O3 were prepared by using screen printing method. The sample was characterized by
XRD. It was found that change in resistance i.e. sensitivity of PPy sensor with Al 2O3 as
substrate is more than that without Al2O3 base. Also, it is recorded that ON time is 55 s and
OFF time is 93s.
Keywords: Screen – Screen Printing Method; PPy Double layer sensor.
31
62. Study Of Thickness Dependent Structural
And Optical Properties Of ZnS Thin Films
S. K. Devade, M. N. Musale,
ABSTRACT
Zinc sulphide (ZnS) thin films were deposited on glass substrate using relatively
simple chemical bath deposition. method (CBD), using the mixed aqueous solution of zinc
sulphate, thiourea and ammonia. The ammonia was used as the complexing agents. The
preparative parameters are concentration, pH of solution, deposition time and temperature has
been optimized. Thin films of ZnS with different thickness 100-350 nm were prepared by
changing the deposition time from 20–100 minutes at 800C temperature. The effect of film
thickness on structural and optical properties was studied. The thin films were characterized
by using X-ray diffraction (XRD) and Fourier transformation, Infrared spectroscopy (FTIR).
The effect of thin films thickness on optical and structural properties has been studied.
Keywords: Zinc Sulfide, Thin films, structural and optical properties
63. Study Of Structural, Thermal And Non-Linear Optical
Properties Of Some Gel Grown, Doped And Undoped Crystals Of
Barium Iodate, Monohydrate
Sharda J. Shitole
ABSTRACT
Single crystals of barium iodate, monohydrate [Ba (IO3)2, H2O], which exhibit prominent
non-linear optical property were grown by gel method. Since this compound decompose
before its’ melting point, conventional high temperature methods for growth are not
applicable. Moreover the method is simple and inexpensive. These crystals were also doped
with impurities such as Fe3+ and Cu2+ to study their effect on properties of grown crystals.
32
Silica gel was used as growth medium. Optimum growth conditions were established.
Prismatic, dendritic crystals of barium iodate were obtained.
The X-ray diffractograms of grown crystals were recorded. They match very
well with the standard JCPDS data. Diffractograms manifest that impurities have been
accepted only in certain planes, but crystal structure remains unaffected. However small
changes in lattice parameters in volume of unit cell are observed. This change may be
attributed to ionic radii of doped impurities. (Ba2+ = 1.35A0, Cu2+ = 0.73A0, Fe3+ = 0.645A0)
Thermal analysis of doped and undoped barium iodate shows two steps on heating
the samples. First, they undergo dehydration and then decompose beyond 5500 C. It is
observed that there are no structural changes due to doping.
Powder SHG measurement is a simple and quick experimental technique for the
evaluation of second order nonlinear optical properties of material, was used to determine the
magnitude of nonlinear coefficient of grown crystals. Results indicate that, barium iodate
crystals are having nonlinear optical property. Cu-doping reduces nonlinear optic property
significantly. Fe-doping also has negative effect but less than Cu-doping
Keywords. Barium iodate, Silica gel, Doping, XRD, TGA/DTA, NLO property, SHG.
64. E.C.G. Changes - Recognising The Signs Of Danger
P.D.Bageshwar, P.H.Bhagwat, .A.U.Ganar
ABSTRACT
The clinical diagnosis depends mainly on a patients history and lesser extent on the
physiological examination . the E.C.G. can provide a support in diagnosis and in some cases
it is crucial for patient management. The E.C.G. is essential for the diagnosis and therefore
management of abnormal cardiac rhythms. It helps with the diagnosis of the cause of the
chest pain and proper use of of thrombolysis in treating myocardial infractions depends upon
it. present study based on some cases of patients E.C.G.
Keywords: Heart , E.C.G. , cardiac rhythms .
65. Long Breathing Cures The Ectopic Pace Maker
Sk. Kalim Sk. Hanis, Vanita Sagane, Sheetal Jadhao, Rachana Khandelwal, Smita Chauhan,
ABSTRACT
A person suffering from the arrhythmia reported to our institution. We recorded the
Electro Cardio Gram (ECG) and found that the arrhythmia is because of ectopic pace maker.
We advised him to take repeated long breathing. Two minutes after starting the long
breathing the ECG became normal and the person starts feeling fresh.
33
Keywords: Arrhythmia, Premature Contraction, Ventricle, Pace Makers
66. Fabrication of Multilayer Thin Film Sensor (MgO-TiO2-ppy)
For Sensing
Application Of CO2 Gas
R. M. Agrawal, G. T. Lamdhade, N.G. Balsere, A.S. Wadtkar, T.S. Wasnik, R. V. Joat,
R. V. Waghmare
ABSTRACT
We have prepared solid solution of (MgO-TiO2-ppy) Multilayer thin films for the CO2
gas detection. The sensor (90MgO-10TiO2-ppy) shows maximum sensitivity towards CO2
gas detection at room temperature (303K). The plot shows the linear nature against
concentration of CO2 gas. The sensitivity of all the samples was found to be increasing with
the change in concentration of CO2 gas.
The sensing mechanism is described as the surface oxygen atoms are desorbed when
sample was exposed to CO2 gas. A p-n junction like structure is formed where at equilibrium
flow of electron from lower work species to higher work species. As there is no electron
present between them the flow of electron becomes very easy. As the flow of electron is
more, this will decreases the electrical resistance with increase in CO2 gas concentration.
Keywords: (90MgO-10TiO2-ppy) Solid solution, CO2 gas sensors, p-n junction structure.
34
67. Synthesis of Carbon Nanotubes from Turpentine oil using CVD.
Turya K. Powle, Kailash R. Jagdeo, Suresh Kadam, M. R. Nair
ABSTRACT
Carbon Nanotubes are allotropes of carbon and have more interesting nanostructures. There size fall in
the nanoscale which gives them unique physical and chemical properties and vast application potential.
Carbon Nanotubes were synthesized by Chemical Vapour Deposition (CVD) method which is simple,
economic and more reliable. Carbon Nanotubes were synthesized from Turpentine oil as plant precursor
using Fe powder as catalyst by chemical vapour deposition technique. The Nanotubes are characterized
using SEM/TEM studies and confirmed.
Keywords: Carbon nanotubes, CVD.
68. Synthesis And Characterization Of Antimony Doped SnO2
Yogita S. Patil, I.D.Patil , F.C.Raghuvanshi , B. H.Pawar
ABSTRACT
SnO2 nanoparticles were synthesized by co-precipitation method from SnCl2.2H2O as a
precursor. Sb2O3 is doped with SnO2.Then subsequent heat treatment is given to Sb2O3 doped SnO2 at
6000C. The prepared sample is characterised by X-ray diffraction (XRD), Transmission Electron
Microscope, Scanning Electron Microscope and FTIR. In XRD study, the average particle size is found
to 5.94 nm using Scherer formula and in SEM study, the particle size is found to be 10.2 nm.
35
69. Specific Heat Of Y1-xSrxCoO3-δ Cobaltate Perovskites
Renu Choithrani
ABSTRACT
Specific heat of the yttrium doped strontium cobaltates Y1-xSrxCoO3-δ have been computed using an
extended rigid ion model (ERIM). These materials have scientific and technological applications in solid
state devices and for the unusual sensitivity of their magnetic and transport properties to oxygen content.
YSCO has the highest ferromagnetic ordering temperature, (Tc = 335 K), of any of the perovskite
cobaltates and much of the research on YSCO to date has focused on understanding the competition
between the ferromagnetic and the antiferromagnetic exchange interactions in the compound. The
computed specific heat, Debye temperature and cohesive energy values follow the same trend as that of
available experimental results.
Keywords: Cobaltates, Specific heat, Debye temperature, Cohesive energy.
70. Intensity Distribution Across The Output Of Copper Vapour Laser
Discharge
V. K. Jadhao, A. P. Pachkawade, K. K. Hurde, K. P. Kadam
ABSTRACT
The intensity distribution across and along the laser output beam exhibits different structures at
different electron temperatures. The output beam has Gaussian distribution at low electron temperatures
(1eV) and at high electron temperature (10 eV) at the axis of the laser beam becomes annular. At
moderate electron temperatures at the axis the part of beam may be annular and the part may be
Gaussian. The computed results show very good agreement with the experimental results.
The time and space resolved output intensity of copper vapour laser discharge has been
investigated. The ionization and recombination rate coefficients of different ionic species of helium,
neon and copper are obtained as function of electron temperature and from which the fractional
abundances are then obtained. The electron impact excitation rate coefficients are obtained and the
output power by the plasma at the particular electron temperature is calculated. The electron temperature
and the density are assumed to behave like zero order Bessel function having maximum at the axis and
minimum near the walls. The time and space variation of intensity has been studied by considering
different electron temperatures at the axis.
36
71. Vibrational Relaxation of Vibrational Levels Create Population
Inversion Continuously on About 21 Transitions
D. P. Garud, R. S. Ramshetti, U. B. Dindore, S. G. Algude
ABSTRACT
We compute the electron impact excitation rate coefficients of vibrational levels of C 3 IIu, B3 IIg
and A3 u electronic systems of N2 molecule and show that the population inversion may be
obtained on 77 transitions of first and positive system. The laser action has been observed on 7
transitions in second positive system and 14 transitions in first positive system. It has been
predicted by proper adjustment of laser parameters amplification may be obtained at remaining
wavelengths also. Furthermore it has been shown that the vibrational relaxation de-populates the
higher vibrational level and populates the vibrational level with v=0. This shows that the population
inversion may be generated continuously on about 10 transitions.
72. Magnetized Dark Energy Model in Scalar Tensor Theory of
Gravitation
S.D.Katore, A.Y.Shaikh, M.M.Sancheti
ABSTRACT
In this paper, we have studied the solutions of cylindrically symmetric Einstein Rosen universe
with variable ω in the scalar tensor theory of Gravitation proposed by Saez and Ballester (Phys.
Lett. A 113:467, 1985) in the presence and absence of magnetic field of energy density ρB. A
special law of variation for Hubble’s parameter proposed by Berman ( Nuovo Cimento 74
B,182(1983)) has been utilized to solve the field equations. Some physical and kinematical
properties of the model are also discussed.
Keywords: Dark Energy , Magnetism.
37
73. Bianchi
Type VI0 Magnetized Dark Energy Model in
f ( R, T ) Gravity
S.D.Katore , B.B.Chopade, S.H.Shekh.
ABSTRACT
A magnetized dark energy model with E0S parameter is investigated in f ( R, T ) gravity in Bianchi
type- VI0 space-time in the presence of perfect fluid source. To obtain a determinate solution
special
law
of
variation
for
Hubble's
parameter
proposed
by
Berman
[(NuvoCimentoB,74,183(1983)] is used. We have also assumed that the scalar expansion is
proportional to shear and the EoS parameter is proportional to skewness parameter. It is observed
that the EoS parameter, skewness parameters in the model turn out to be functions of cosmic time.
Some physical and kinematical properties of the model are also discussed
Key words:- Dark energy, Constant deceleration parameter, f ( R, T ) gravity, Bianchi Type VI0 space-time.
74. Study on optical properties of Cd doped ZTS single crystals
P. M. Wankhede, S. A. Gundale, M. N. Rode, G. G. Muley
ABSTRACT
The optical properties; UV-Visible and photoluminescence of the Cd doped Zinc Tris (Thiourea)
Sulphate (ZTS) single crystals grown from solution at low temperature by slow evaporation of
solvent method using water as solvent have been studied. The optical transparency of grown
crystals was measured over 190-1083nm wavelength range. It is found that the grown crystals have
good transparency within the wavelength range 285-1083nm and increases with concentration of
Cd. The photoluminescence study shows increase in the luminescence intensity with concentration.
Keywords: Solution growth; ZTS; NLO crystals; Photoluminescence.
38
75. A Pilot Study Of The Various Treatment Methods For Vitiligo
Patches Along With UV Radiation.
U.R. Kathale, A.B.Lad,S. S. Arsad , B.H.Pawar
ABSTRACT
Vitiligo is a common hypopigmentation disorder disease that causes a great degree of
psychological distress. Including India vitiligo has affected 1-2% of the world population. Fifty
percent of cases appear before the age of 20, with the disfigurement resulting in psychiatric
morbidity in 16 to 35% of those affected. In its classical forms it is easily recognised and
diagnosed. This pilot study discusses the methods for the treatment of vitiligo patches which are
based on evidence. The treatment of vitiligo is a long term process which may lead to
unsatisfactory results if the treatment is abandoned by the patient. The disease pathogenesis of
vitiligo has not been fully elucidated. Autoimmune, biochemical and oxidative stress, genetic,
neuronal and environmental factors are thought to interact and contribute to the development of
vitiligo 7. Depression, sleep disturbances, suicidal thoughts, suicidal attempts, difficulties in
relationships and avoidance of social situations have been reported in individuals afflicted by
vitiligo before adulthood. Vitiligo can be confused with leprosy, leading to further stigmatization.
This study included visit to clinics, trials and feedback from patients to determine the present
methodology being used for the treatment. The review is reported here.
76. Basic facts of the Laser as a treatment tool for vitiligo.
S.S. ARSAD
ABSTRACT
The most recent trend in the skin treatment is Laser treatment. It has an advantage that surgery of
skin can be avoided which gives psychological relief to the patient. The transplanting of skin called
grafting needs surgical instruments whereas the same results may be obtained without any cut or
paste. An increasingly sophisticated understanding of the biophysics of laser-tissue interactions has
lead to a more efficient utilization of the present technology on the clinical side and at the same
time is helping the physicists to add more and more highly selective laser systems in the
armamentarium of aesthetic laser surgeons. [1]. A significant understanding of lasers and light
sources is required for their optimal use. Also a basic understanding of laser physics is mandatory
to carry out an efficient laser treatment. This article discusses current clinical applications of laser
39
from treatment point of view.Laser light is monochromatic, bright, unidirectional and
coherent.Directionality allows the laser beam to be focused on a very small spot size.
77. Study of optical parameters of Chemical Bath deposited
CdxZn1-xS thin films
L.S. Ravangave, U.V. Biradar, S. D. Misal
ABSTRACT
The Cd1-x ZnxS (x=0,.0, 0.2, 0.4, 0.6,0.8 1.0) thin films are successively deposited by using
Chemical Bath Deposition Method (CBD). The prepared thin films were characterized UV-Visible
spectrophotometer for optical study. The absorption spectra recorded at room temperature shows
blue shift of absorption edge. The percentage transmittance was observed maximum in the visible
and near infrared region. The maximum transmittance 78% is obtained for x=0.8 composition of
the Cd1-x ZnxS thin film. The less reflectivity concluded that the prepared thin films obey
antireflection properties. The statistical data shows tuning of band gap with Zn content. The effect
of composition on refractive index, absorption index and other optical dispersion parameters are
also investigated. The calculated values of average excitation energy Eo approximately obey the
empirical relation obtained from single oscillator model.
Key words: Chemical Bath Deposition, structural parameters, band gap, optical constants.
78. Ultraviolet Weathering PVC and Wood Flour Filled PVC Composite Thin
Films.
S. D. Meshram
ABSTRACT
Thin films of Polyviyl Chloride (PVC) and PVC filled with wood flour at different weight percent
(5,15,30,45%) were exposed with UV radition for different time intervals. The performance
chateristics of unexposed and exposed thin films in terms of tensile strength, percent elongation at
break as a function of filler concentration and exposer time were recorded. Decrease in tensile
strength and percent elongation at break with increase in in wood flour concentration and exposer
time were observed. The samples were chaterised by XRD , FTIR and SEM. An attempt was
made to explain the results obtained.
40
Keywords: PVC/Wood flour thin films, Composite, Tensile strength, Percent elongation at break ,XRD, FTIR, SEM.
79. Distribution Of Intensity Across Output Laser Beam In Copper
Vapour Laser Discharge
A. P. Pachkawade
ABSTRACT
We investigated the change in the intensity distribution across the laser beam by changing the
electron temperature at the axis. It found that the intensity distribution is very sensitive function of
the electron temperature at the axis. If the electron temperature is very low the intensity distribution
is very much similar to the Gaussian distribution. The intensity distribution remains Gaussian up to
certain electron temperature at the axis. If the temperature is increase above certain value the
intensity distribution becomes flat at the axis. Further increase in temperature gives rise to dip at
the axis in the intensity distribution. The dip at the axis go on increasing and the radius of a circle,
where the intensity is maximum, go on increasing as the electron temperature at the axis is increase.
Further increase in temperature gives rise to annular shape of laser beam.
41